Improvement in paper-folding machines



2 Sheets-Sheet 1. O. CHAMBERS, Jr. & W. MENDHAM,- Paper-Folding Machine.

No. 216,598. Patented June I7, 1879.

ETERS, PNOTO-IJTMOGRAPMER. WASHINGTON. u C.

2 Sheets-Sheet 2 U. CHAMBERS, Jr. & W. MENDHAM.

Paper-Folding Machine No. 216,598. Pat'ented June17,1879

W T JVESSES K V BZ/ /MZttorn%JM1/MM I PETERS, FHOTO-LITHOGRAPHER,WASHXNGTON. D C.

UNITHD STATES PATENT OFFICE.

oYnUs CHAMBERS, Jn, AND WILLIAM MENDHAM, OF PHILADELPHIA, PA.

IMPROVEMENT IN PAPER-FOLDING MACHINES.

Specification forming part of Letters Patent No. 216,598, dated June 17,1879 application tiled January 12, 1877.

To all whom it may concern:

Be it known that we, CYRUs CHAMBERs, Jr., and WILLIAM MENDHAM, ofPhiladelphia, in the county of Philadelphia and State of Pennsylvania,have in vented certain new and useful Improvements in Paper-FoldingMachines; and we do hereby declare that the following is a full, clear,and exact description of the invention which will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

Figure l is a side elevation of the machine, parts being cut away toshow the interior structure of the drum and roll. Fig. 2 is. anelevation of the opposite end of the machine to that shown in Fig. 1.Fig. 3 is a back view of the main drum. Fig. 4 is an enlarged sectionalview ofa part of the main drum, showing the sheet engaged by theacorn-pins and the curved rods for releasing the sheet.

The same part is indicated by the same letter of reference in theseveral figures where it occurs.

Our invention consists in improvements in the devices for securing thesheet of paper to the creasing and carrying drum, and delivering it,creased for the first fold, to the bite of the drum and firstfolding-roller, all as hereinafter more particularly set forth.

The machine is clearly represented in the accompanying drawings.

Upon ,a strong frame, A, is supported a large table, B, to receive thebank of sheets to be folded. From this table they are fed in by theoperator to the folding mechanism; 0 marks 'a winch, representing thepower by which the machine is driven.

D is the main drum, formed in sections, as shown in Fig. 3, andcooperating with roller E in giving the first fold to the sheet. Drum Dis furnished with pins or plain points 12, which receive and hold theforward end of the paper. They pass into grooves in the droproller F andcarryingroller G. The droproller F turns on journals in the ends of armsH. H, fixed to the shaft J of roller Gr. To one end of the same shaft isfixed the lever I, in the free end of which is a friction-roller runningon the face of cam K, fixed on one end of the shaft L of drum D. A rod,1', is pivoted to this arm, passing through the eye 0, turning in theframe, and has a spiral spring, .9, surrounding it, the reaction ofwhich keeps the friction-roller in contact with the face of cam K. Thiscam controls the movements of the droproller F, causing it to drop whenthe sheet fixed upon pins 1) passes under it, and keeping it in contactwith the drum D until the acorn-headed pins V have passed the line ofcontact between rollers Gr and D, then raising it until the succeedingsheet is fed in.

The creasing-roller G is provided with a oreasing-blade, W, as shown inFig. 2. This roller turns three times to each revolution of the drum D,and the creasing-blade is received into three grooves or recesses indrum D, two of which are blank, and the third provided with acorn-headedpins V. (Shown in enlarged view in Fig. 4.) The groove armed with thesepins follows under the drop-roller the line of pins 1) p at the distancerequired to cause the acorn-pins V to perforate the sheet in the line ofthe first fold. The sheet is driven upon the pins V by the action of thecreasingblade W, entering the recess in which those pins are located.

On the opposite end of main shaft Lto that 011 which cam K is fixedthere is attached a cam, M. Lever N, pivoted at b to the frame, has afriction-roller,f,-in its end, running in contact with the face of camM, to which it is held by spiral spring 8, wound around the rod 1',which passes through swiveling-eye e, the spring reacting to throw leverN toward cam M. To the end of lever N is pivoted rod 0, connecting withcrank-arm P on the end of shaft Q, to which the switches or fingers Itare attached. (See Fig. 3.) The cam M, by its rotation, controls themovements of the switches R, throwing them out of drum D at the propertime to strip off the forward end of the sheet from the plain pins 1;,and guide it between the rods T U, and retracting them in time to allowthe portion of the sheet held by the acorn-headed pins V to be carriedup into the bite of drum D and roller E to receive the first fold. I

S marks the supporting-rods, passing from the rear of the frame overroller E, and havin g their curved ends received into recesses X in thedrum D. The curved ends of these rods (see Fi 4) strip the sheet Z fromthe acorn-pins V as it passes into the bite of the rollers D and E, andcarry it into position to receive the succeeding fold. The foldsfollowing the first are made in the usual manner.

We do not claim, broadly, the combination of a mechanism forautomatically controlling the leading end of a sheet and delivering itwith in the range of action of the folding mechanism with a rotatin gfolding mechanism; but

What we claim is 1. In combination with the sheet-carrying V drum of afolding-machine, the acorn-headed pins V, located in a creasing-groove,and'opcrating to deliver the fold-line of the sheet to the foldingmechanism, substantially in the manner set forth.

2. In combination with the drum D, the

plain pins 1) and acorn-headed pin'sV, arranged to receive, carry, anddeliver the sheet, as described.

3. The combination of the creasing-roller Gr,

provided with the blade W, with the main drum 1), furnished with groovesY, points 29,,

